IBM pushing System z, Power7+ chips as high as 5.5GHz, mainframes get mightier

Ten-core, 2.4GHz Xeons. Pshaw. IBM is used to the kind of clock speeds and brute force power that lead to Europe-dominating supercomputers. Big Blue has no intentions of letting its guard down when it unveils its next generation processors at the upcoming Hot Chips conference: the company is teasing that the “zNext” chip at the heart of a future System z mainframe will ramp up to 5.5GHz — that's faster than the still-speedy 5.2GHz z196 that has led IBM's pack since 2010.

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